Zoonotic Endocarditis in a Man, the Netherlands

Area of Science:

• Veterinary Medicine
• Infectious Diseases
• Genomics

Background:

• Endocarditis is a serious infection of the heart lining.
• Streptococcus equi subspecies zooepidemicus is a bacterium primarily found in animals.
• Zoonotic diseases pose a significant public health concern.

Observation:

• A 2017 case of endocarditis in the Netherlands was linked to Streptococcus equi subspecies zooepidemicus.
• The patient had daily contact with horses.
• The bacterium was also identified in the patient's horses.

Findings:

• Whole-genome sequencing confirmed the same bacterial clone in both the patient and his horses.
• This genetic evidence strongly indicates transmission from horses to the human patient.
• The findings establish a direct link between equine contact and human infection.

Implications:

• This case highlights the potential for Streptococcus equi subspecies zooepidemicus to cause severe human infections.
• Systematic reporting of zoonotic infections is crucial for accurate risk assessment and prevention strategies.
• Enhanced surveillance of animal-to-human disease transmission is warranted, particularly for individuals with close animal contact.